The NLUSB2-222 is a 4 port USB 2.0 compliant hub that allows up to 4 USB 1.1 or 2.0 devices to be connected to your computer. It supports the High Speed transmission rate of up to 480 Mbps and is fully backward compatible with USB revision 1.1 devices.N/AN/A- 4 USB 2.0 Ports up to 100mA per port or up to 500mA (with power adapter)N/A- Supports over current protection on each port.N/A- Provides 4 type A female and 1 type B female connectors.N/A- Supports High-Speed (480 Mbps) Full-Speed (12 Mbps) and Low-Speed (1.5 Mbps)N/A- Compliant with USB specification Revision 2.0.N/A- Power LED to indicate self power or bus power.N/A- Supports Plug and Play